However, You should always customize the validation error messages.

If you imagine form as a dialog between your website and your user, the messages play an important role.

This includes a large bunch of sample code and a complete reference guide to all the built-in validation rules in the library.

If you skip the message for a validation, the default message is displayed.

When attempting to validate HTML coded for email with a web validator, it’s pretty common to see errors and warnings that are confusing. DOCTYPE is a document type declaration, and is usually placed at the beginning of your HTML file to tell the validator which set of standards to check your HTML against: In the case of web development, it also tells the browser which rendering mode to use.HTML validators are invaluable tools for people that write code.They can let you know if there are any errors present that might cause display issues and give you some clues for debugging.If the purpose of registration is to confirm that the person exists, and that they have supplied a valid email address, then as part of the registration processe you a should either email them a random password or a confirmation token rather than letting them choose their own password and use it immediately.The code presented below would then be used for letting the user change their password.